This art history video discussion examines Gian Lorenzo Bernini's "Bust of Medusa," marble, c. 1644-48 (Capitoline Museum).

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This art history video discussion looks at Gian Lorenzo Bernini, Cathedra Petri (or Chair of St. Peter), gilded bronze, gold, wood, stained glass, 1647-53 (apse of Saint Peter's Basilica, Vatican City, Rome). According to tradition, St. Peter himself, the founder of the institution of the Church and considered the first pope, sat on the ancient wooden chair that is encased within this larger bronze and gold chair.

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This art history video discussion looks at Gian Lorenzo Bernini, David, 1623-24, marble (Galleria Borghese, Rome).

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This art history video discussion looks at Gian Lorenzo Bernini's "Ecstasy of Saint Theresa", 1647-52 (Cornaro Chapel, Santa Maria della Vittoria, Rome).

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This art history video discussion examines Gian Lorenzo Bernini's "Pluto and Proserpina" (also know as the Rape of Proserpina), 1621-22, marble (Galleria Borghese, Rome). Proserpina is the Latin varient of the mythic Greek Persephone.

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This art history video discussion looks at Gian Lorenzo Bernini's "Saint Peter's Square (Piazza San Pietro)", Vatican City, Rome, 1656-67.

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This art history video discussion looks at Gian Lorenzo Bernini's "Sant'Andrea al Quirinale", 1658-70, Rome; commissioned by Cardinal Camillo Francesco Maria Pamphili for the nearby Jesuit seminary.

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

Bianca visits a bike shop and learns how bicycle gears work in this Cyberchase video segment.

This Cyberchase video segment features Bianca, who must figure out the fastest route to a movie premiere.

This video segment from Cyberchase introduces the idea of inverse operations as Bianca imagines herself as a spy.

This short video and interactive assessment activity is designed to teach second graders about bills and coins - word problems.

An infectious disease specialist at Hackensack University Medical Center in New Jersey, Dr. Bindu Balani treated the state's first confirmed COVID-19 patient in March 2020. In this episode, Bindu shares her experiences on the front line of the battle to identify, treat, and stem the subsequent surge of COVID-19 cases. From this unique vantage point, we learn how all units of the hospital mobilized and adapted to protect and serve the patients in their care. A new virtual interview series from LabXchange at Harvard University, the Xchange showcases the diverse roles, projects, and initiatives that make up the intersecting fields of science, education, and health. Hosted by LabXchange Faculty Director Robert Lue, our first season features a range of perspectives on the impact of COVID-19.

This 17-minute video lesson looks at understanding the structure of a muscle cell. [Biology playlist: Lesson 50 of 71].

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This 6-minute video lesson provides an introduction to the neuron and its anatomy. [Biology playlist: Lesson 41 of 71].

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This 14-minute video lesson provides an overview of B cells (B lymphocytes) and how they are activated and produce antibodies. [Biology playlist: Lesson 53 of 71].

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This 18-minute video lesson provides an introduction to bacteria. [Biology playlist: Lesson 18 of 71].

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This 17-minute video lesson looks at C-4 Photosynthesis: How some plants avoid photorespiration. [Biology playlist: Lesson 33 of 71].

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This 9-minute video lesson looks at how CAM Plants are able to fix carbon at night so they don't have to keep their stomata open during the day. [Biology playlist: Lesson 34 of 71].

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This 13-minute video lecture provides an introduction to what cancer is and how it is the by-product of broken DNA replication. [Biology playlist: Lesson 13 of 71].

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This 18-minute video lesson looks at the the vocabulary of DNA: chromosomes, chromatids, chromatin, transcription, translation, and replication. [Biology playlist: Lesson 8 of 71].

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.